Lens Helios-44-2 58mm f./ 2 M42 Soviet lens Vintage rare lens The Helios 44-2 lens is a Soviet standard lens produced at the Krasnogorsk Mechanical Plant from 1958 to 1991. It is one of the most famous and popular lenses made in the USSR and continues to be used today due to its versatility and image quality. The main characteristics of the Helios 44-2 lens: Focal length: 58 mm. Aperture: f/2 - f/16. Number of aperture blades: 8. Focus distance: 0.5 m. Mount type: M42. Viewing angle: 45 degrees. Number of lenses: 6 elements in 4 groups. Filter thread: 52 mm. The Helios 44-2 lens is well known for its soft, almost dreamy pattern and vibrant colors that it creates in photographs. It is sought after by amateur and professional photographers for its affordability, versatility and image quality. It can also be used with a variety of adapters on other cameras, making it a versatile option for photographing a variety of subjects.